﻿/* 
 * Copyright (c) 2011, Andriy Syrov
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided 
 * that the following conditions are met:
 * 
 * Redistributions of source code must retain the above copyright notice, this list of conditions and the 
 * following disclaimer.
 * 
 * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and 
 * the following disclaimer in the documentation and/or other materials provided with the distribution.
 *
 * Neither the name of Andriy Syrov nor the names of his contributors may be used to endorse or promote 
 * products derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED 
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY 
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 
 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 *   
 */

namespace ColorWheel.Core
{
    using System;
    using System.Windows;
    using System.Windows.Data;
    using System.Windows.Media;

    public class ColorToBrush: IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            if (value == null || !(value is Color))
            {
                return DependencyProperty.UnsetValue;
            }
            return new SolidColorBrush((Color) value);
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

    public class BrushToBrush: IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            if (value == null || !(value is Brush))
            {
                return DependencyProperty.UnsetValue;
            }

            double coff = parameter == null ? 0 : double.Parse(parameter.ToString());

            if (value as SolidColorBrush != null)
            {
                return new SolidColorBrush((value as SolidColorBrush).Color.Lighter(coff));
            }
            else if (value as LinearGradientBrush != null)
            {
                LinearGradientBrush lgb = value as LinearGradientBrush;
                LinearGradientBrush result = new LinearGradientBrush()
                {
                    StartPoint = lgb.StartPoint,
                    EndPoint = lgb.EndPoint
                };

                foreach (GradientStop gs in lgb.GradientStops)
                {
                    result.GradientStops.Add(new GradientStop()
                    {
                        Color = gs.Color.Lighter(coff),
                        Offset = gs.Offset
                    });
                }

                return result;
            }
            else
            {
                throw new NotImplementedException();
            }
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }
}
